INDEX 



359 



Variation, movements of, Pt. II, Chap. V, 316-320; 

 autonomic movements of, 316; paratonic move- 

 ments of, 316-320 



Variegated leaves, 178 



Vaucheria, 331, 332 



Verbasuim, 276 



Verbena, 276 



Verworn, on conditional control, xxxi; General 

 Physiology, 154 



Vesque, on absorption and transpiration, 136 



Vessels, gas in, 144; movement of sap in, 146; 

 transmission of pressure in, 145; negative pres- 

 sure in, 106, 132, 133, 144 



Vetch (see also Vicia), 19, 157. r 59> 280 



Vicia (see also Vetch), 101, 159. 162, 174, 225, 226, 

 248, 249, 276, 281 



Vienna, 289, 290 



Ville, on chlorophyll formation and soil fertility, 16 



Vinegar, 231 



Vines, on enzymes of Nepenthes, 37; on light and 

 leaf growth, 284; V. and Green, on proteins 

 of Asparagus, 158 



Vinogradskii, on nitrifying organisms, 48, 68; on 

 selective culture, 43; on sulphur bacteria, 49; 

 on iron bacteria, 52; on nitrifying organisms of 

 soil, 68; on nitrogen fixation by microorgan- 

 isms, 78; V. and Omelianskii, on nitrobacteria, 

 69 



Viola, 87 



Virulence, of bacteria, 182 

 Vitis, 248, 312 



Vöchting, on light and leaf position, 277; on light 

 and development of cacti, 283; on light and 

 floral development, 291; on zygomorphy, 295 ; 

 on correlations, 299; on formation of tubers, 

 326; on sprouting of potato tubers, 327; on in- 

 duced rhizome formation, 327; Organbildung, 

 329; Transplantation, 334, 335; on symbiosis 

 of Helianlhus annuus and H. tuberosus, 335 



Volatile oils, 136 



Volkens, on guttation, 140 



Vorbrodt, on phosphorus compounds and phytin, 



174, 185 

 Voronezh, 95 

 Voss, on twining, 311 

 Votchal, on water transfer, 143, 145, 146; on solanin 



in plants, 182 

 Votchall, see Votchal. 



Vries, de, on turgidity, isosmotic coefficients, etc., 

 114, us, 116, 119; on osmotic values of cell 

 sap, 123; on plasmolysis, etc., 121, 244; on 

 protoplasmic streaming, 123; on root contrac- 

 tion, 250; on tendrils, 312 



W 



Wagner, A., on leaves of alpine plants, 322 

 Wagner, P., fertilizer experiments, 70, 73, 94 

 Wahl and Henius, Book of brewing, etc., 201 

 Waiden, on osmotic membranes, 113 

 Walther, Krasnosselskii, Maksimov and Malchev- 



skii, on hydrocyanic acid in bamboo, 179 

 Washburn, on osmotic pressure, etc., 109, 1 10, 1 u, 



119 

 Wasps, distributors of yeast, 201 

 Water, absorption of, 273, 274; importance of, 188- 



189; in metabolism, 18, 79, 82, 189, 198, 207, 



208, 217, 218, 223, 22s; in respiration, 217-218; 

 transfer of, 107, 133-134. U3. 145, 146; and 

 configuration, 266, 270; purification of, by sun- 

 shine, 292 

 Water-plants, 38 

 Water-pouches, 264, 26s 

 Water-requirement, Г37 

 Wax, 263 



Weather, and gas in vessels, 144 

 Weber, on ash of etiolated leaves, 285 

 Weevers, on potassium in plants, 90; on cafiVin and 



theobromin, 176 

 Wehmer, on ash analyses, 89; on Mucor fermenta- 

 tion, 208; on oxalic acid in fungi, 188 

 Weighting of light values, 290 

 Weimarn, on colloids, 111, 112 

 Weinzierl, on alpine cultures, 323 

 Weissberg, see Engler and W. 



West, on chlorophyll, 6; on non-chlorophyll pig- 

 ments, 21 

 Weyl, on proteins, 158 



Wheat (see also Triticum), 17, 158, 159. 161, 17-', 

 184, 188, 190, 221, 223, 227, 229, 281, 284, 331 

 Wheat rust, 86 



Whitney and Cameron, on soil fertility, 99, 101 

 Wieland, on oxidation processes, 199, 208 

 Wieler, on bleeding, 140 

 Wiener, on iron in plants, 90 



Wiesner, on chlorophyll formation, 14, 15; on 

 transpiration, I35i 137, 138; on descending 

 water stream, 268; on diffusion in plants, 107; 

 on light relations, 27, 274, 283, 286, 288, 289, 

 290; on geotropism, 292, 300; on circummuta- 

 tion, 314; on phototropism, 275, 279, 292,314; 

 W. and Molisch, on gas movement in plants, I06 

 Wilfarth, see Hellriegel and W. 

 Wille, see Ville. 

 Willow, 250, 251, 280, 329 



Willstätter, on chlorophyll, 6, 7, 8, 13; W. and 

 Asahina, on chlorophyll derivatives, 12; W. 

 and Benz, on chlorophyll, 7, 9; W. and Escher, 

 on lycopin, 20; W. and Fritsche, on chlorophyll 

 derivatives, 11, 13; W. and Hocheder, on 

 chlorophyll derivatives, 8, 13; W. and Hug, on 

 chlorophyll, 6; W. and Isler, on chlorophylls- 

 of different plants, 13; W., Mayer and Huni, on 

 phytol, 8; W. and Mieg, on yellow pigments, 

 19; W. and Pfannenstiel, on rhodophyllin, 13; 

 W. and Stoll, on chlorophyll, 6, 11, 13, 20; on 

 chlorophyllase, 8 

 Wilting, 36, 14s, 273 

 Winkler, on gas analysis, 4 

 Winogradsky, see Vinogradskii. 



Winterstein, on fungus cellulose, 186; on phos- 

 phatides, 183; W. and Hiestand, on phos- 

 phatides, 183; W. and Smolenski, on phospha- 

 tides, 183; W. and Stegmann, on phosphatides, 

 183; W. and Trier, on alkaloids, 181. (See also 

 Schulze and W.) 

 Witches brooms, 301, 302 

 Woburn Experimental Farm, 99 

 Wohler, on synthesis of urea, xxvii 

 Wolff, on ash analyses, 88 

 Wolkoff and Mayer, on respiration, 210, 216 

 Wollny, on evaporation from soil, etc., 137 

 Wood, air of, 1 j->; strains in, 251; water movement 

 in, 133 



